$lang['captcha_result'] = "Your result is wrong, please try again !";$lang['captcha_desc_result'] = "Please enter the code from the image into the text field below, and write the result right inside of it.<br>If you have problems identifying the image, click on it to get a new one..";

Also, the installation of the mod could be simplified to at least in half, if instead of calling captcha_validate_sum() function from "main" files it would be called within captcha_validate() function. With this method no additional changes required in details.php, register.php, etcYou can see what I mean in reCAPTCHA mod.